System of record
ACID transactions store bookings, fleet, finance, and audit data for the entire platform.
PostgreSQL holds authoritative records for guests, chauffeurs, vehicles, and financial statements.
Row-level locks protect concurrent dispatch assignments during peak airport windows.
JSONB columns store flexible metadata — flight numbers, meet-and-greet notes — with indexed queries.
NestJS services commit booking and payment rows in single transactions.
Streaming replicas feed reporting without impacting OLTP latency.
Cold storage jobs move aged logs to cheaper tiers per compliance policy.
Decades-proven engine handles finance-grade consistency requirements.
Complex settlement reports run SQL without exporting to warehouses first.
Backups, PITR, and monitoring integrate with standard DevOps stacks.
Encryption at rest and TLS in transit protect clusters in production regions.
Least-privilege roles limit application credentials to required schemas only.
Managed PostgreSQL hosts primary and replica nodes with automated failover drills.
Prisma migrations apply DDL; Grafana tracks slow queries and lock contention.
Thousands of concurrent bookings commit without lost updates.
Accountants reconcile millions in settlements via SQL exports.
Auditors sample immutable booking and admin action histories.
